Toph banntek



0. P, C. BANNIER. DEVICE FOR TURNING MUSIC SHEETS.

(No Model.)

No. 444,390 Patented Jan.6,1891.

5% M/ZQW UNITED STATES PATENT OFFICE.

OTTO FRIEDRICH OHRISTOPl-I BANNIER, OF HAMBURG, GERMANY.

DEVICE FOR TURNING MUSIC-SHEETS.

SPECIFICATION forming part of Letters Patent No. 444,390, dated January6, 1891.

Application filed April 8, 1890. Serial No. 347,146- (No model) To awhom it may concern:

Be it known that I, OTTO FRIEDRICH CHRIS- TOPH BANNIER, a subject of theEmperor of Germany, and a resident of Hamburg, Germany, have invented anew and useful Improvement in Devices for Turning Music- Sheets, ofwhich the following is a specification.

This invention relates to a device for turning music-sheets, which isoperated by pulling a cord or depressing a pedal connected with thelatter.

Referring to the accompanying drawings, in the various figures of whichlike letters of reference denote like parts, Figures 1 and 2 areperspective views, and Figs. and 4 details, of the improved contrivance.

A casing A, secured in any suitable manner to a music desk or table,contains the mechanism, consisting of three principal parts, viz:driving apparatus, folder, and reverser.

The driving apparatus is composed of a rail or rod 5, sliding in aguiding-tube g and connected through an angular connecting-link l) witha crank-pin provided on the back of a cord-pulleyr. The latter inclosesa powerful clock-spring adapted to be wound up by pulling the cord a andto thrust back the cordpulley 1- and rod .9 into their normal positionwhen the pulling is discontinued. The other extremity of rod 8 carries apivot .2', adapted to catch into the forkshaped slot of a lever c,mounted on the shaft of the fold-forming device. The latter is lodged,by means of shaft (Z, in a block e, and consists of the lower portionf,rigidly connected with the shaft, and the top portion f, connected hingefashion with the lower portion, and having its head lined, in the mannerof piano striking-hammers, with india-rubber,leather, or cloth. Aleafspring f, attached to the lower portion tends to press the topportion elastically against the music-sheet N.

The reverser consists of a rod U, secured on a cap a, which is placedover the spring-box of cord-pulleyr. The side of cap it, which is closedin front, has a segmental slot through which projects a correspondingcatch-pin 0;, connected to the cord-pulley.

The improved mechanism works as follows: On pulling cord at bydepressing the pedal p, thereby turning the cord-pulley "r to the left,

the rod 3 moves horizontally to'the left and causes the fold-producer toturn from its inclined right-handed position into a vertical position,the head of the elastic top part f describing a segmentalline from rightto left. This latter movement is followed by the right hand lower cornerof the musicsheet to be turned, which so far bulges as to allow itsbeing seized by the now rising reverser from the rear side, which duringits continued progress reverses and smooths the sheet. The segmentalslot in the front side of cap it causes the reverse-r not to participatein this movement until the bulging 0f the musicsheet by thefold-producer is partly completed, thus allowing the reverser to placeitself behind the sheet at the proper moment, while the folder iscompelled to release the same as soon as the elastic top portion fslides along the wedge-shaped front edge of the plate 7c, and is forcedoff the musicsheet owing to the shape of said plate.

Figs. 1 and 2 show, respectively, the position of the reverser whenseizing the musicsheet and after the work is done. O11 releasing thepedal p t. 0., the cord a--the spring inclosed in the cord-pulley 1'causes instantly the folder to resume its inclined inoperative positionand the reverser its horizontal corresponding position.

The turning back of music-sheets, as required with repetitions ofpassages, is effected either by a device, as described, arrangedinversely, or by means of a second reverser \T, as shown on an enlargedscale by Figs. 3 and 4, consisting of a cord-pulley w, cord (1;, andpedal q. The cord-pulley w likewise forms a closed box containing apowerful spring, whereas the reversing-rod V is connected direct withthe cord-pulley. 'hen inoperative, the reverser XV rests on theindia-rubber-covcred pin 0, while the pin 0 determines the turning ofthe reverser. lVhen the latter is to be engaged, it is turned bydepressing the pedal q for about forty-five degrees and fixed in thisposition prior to turning back the in usicsheet for repetition. Allsheets turned over from right to left during the further progress of thepiece and resting on the reverser W are turned back together at thedesired moment through a second pressure on the pedal q.

As shown in Fig. 4, the reverser V is secured inits median position by aclick 71, which catches, by the action of a spring h, into a notchprovided in the rim of the cordpulley. Said click, however, cannotengage till a recess or notch in a loose disk coincides with thecorresponding notch of the pulley, which only occurs during theincipient turning of the reverser V, while during the further progressof the latter said notches are displaced relatively to each other.Consequently, on the return of the reversing-rod the click is allowed toslide along over the notches, its width being equal to the jointthickness of the two disks w and i, and the reverser to be returned asfar as pin 0.

The described devices work in such a precise manner as to allow of asurer and more rapid reversing of music-sheets in any desired directionthan can be done by hand.

hat I claim is- 1. In a device for turning musicsheets, a drivingapparatus consisting of a hollow cordpulley 1', a spring inclosedtherein, cap 11, placed over said pulley, angular link I), and rail s,guidedin tube 9 and connected through said link to pulley 0", saiddriving apparatus being adapted to be operated by any suitable force forturning the pulley and to return automatically into its inoperativestate when released from such force, substantially as specified.

2. A fold-producer adapted to turn about a I on a shaft (Z and carryingleaf-spring f an upper piece f, connected hinge fashion with f, awedge-shaped plate is, a bifurcated lever c, and a base-blocksubstantially as illustrated and described.

3. A music-sheet reverser secured to and movable with the cord-pulley r,and consisting of the reversing-rod U and the cap it, substantially asspecified.

4. An apparatus for turning backmusicsheets for repetition, consistingof a reverser cord-pulley to, loose disk 1', each of the latter twoparts havinga notch, click h, adapted to enter into said notches whencoinciding, spring h, and pins 0 and 0, the described combination ofsaid parts allowing the apparatus to be secured in its elevatedpositionand also to automatically resume its inoperative position,substantiallyas illustrated and described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

O'lTO FRIEDRICH CHRISTOPII BANNIEK Witnesses:

FRITZ HAMMER, CARL WEIss.

